sparc64: Implement IRQ stacks.

[lisovros/linux_canprio.git] / arch / sparc64 / lib / mcount.S

diff --git a/arch/sparc64/lib/mcount.S b/arch/sparc64/lib/mcount.S
index 734caf0cec09a02e77d7cd432ab74631e106cef9..fad90ddb3a28f1aae9a6a44e849b7393bbf87ac3 100644 (file)
--- a/arch/sparc64/lib/mcount.S
+++ b/arch/sparc64/lib/mcount.S
@@ -49,6 +49,28 @@ mcount:
        cmp             %sp, %g3
        bg,pt           %xcc, 1f
         nop
+       lduh            [%g6 + TI_CPU], %g1
+       sethi           %hi(hardirq_stack), %g3
+       or              %g3, %lo(hardirq_stack), %g3
+       sllx            %g1, 3, %g1
+       ldx             [%g3 + %g1], %g7
+       sub             %g7, STACK_BIAS, %g7
+       cmp             %sp, %g7
+       bleu,pt         %xcc, 2f
+        sethi          %hi(THREAD_SIZE), %g3
+       add             %g7, %g3, %g7
+       cmp             %sp, %g7
+       blu,pn          %xcc, 1f
+2:      sethi          %hi(softirq_stack), %g3
+       or              %g3, %lo(softirq_stack), %g3
+       ldx             [%g3 + %g1], %g7
+       cmp             %sp, %g7
+       bleu,pt         %xcc, 2f
+        sethi          %hi(THREAD_SIZE), %g3
+       add             %g7, %g3, %g7
+       cmp             %sp, %g7
+       blu,pn          %xcc, 1f
+        nop
        /* If we are already on ovstack, don't hop onto it
         * again, we are already trying to output the stack overflow
         * message.